Started by Dune, September 20, 2016, 02:55:09 AM
Quote from: Dune on September 20, 2016, 07:25:45 AMEventually, opacity will be greyscale, not pure black or white, so reducing opacity to 0.501 will then be 50.1% grey, making the object half opaque. Now the sunscreen remains totally visible, while only the light passing through is reduced.